作者:林 靜(1982-),女,廣東茂名人,副教授,碩士,現(xiàn)就職于茂名職業(yè)技術(shù)學(xué)院,研究方向?yàn)樾盘?hào)處理與智能檢測(cè)。
摘要:在伺服系統(tǒng)中,運(yùn)用PID算法對(duì)系統(tǒng)進(jìn)行參數(shù)的調(diào)節(jié),使得系統(tǒng)能滿(mǎn)足相應(yīng)要求。將系統(tǒng)分為三部分進(jìn)行分析,首先對(duì)系統(tǒng)進(jìn)行分析方法的選擇(滿(mǎn)足最小相位系統(tǒng)條件),其次對(duì)伯德圖以及相對(duì)裕量分析,最后進(jìn)行相位裕量的分析,從而確定該系統(tǒng)的穩(wěn)定性能情況。采用PID算法對(duì)原系統(tǒng)進(jìn)行校正使系統(tǒng)的振蕩次數(shù)(N)、最大超調(diào)量(σ)和調(diào)整時(shí)間(ts)減小,余差(ess)為零,性能達(dá)到最優(yōu)。
關(guān)鍵詞:PID算法;MATLAB;相對(duì)裕量;伯德圖
Abstract: In the servo system, PID algorithm is used to adjust the parameters of the system, so that the system can meet the corresponding requirements required in the application. The system is divided into three parts for analysis. First, the analysis method of the system is selected to meet the minimum phase system condition. Secondly, the Bode diagram and relative margin analysis. Finally, the phase margin analysis is carried out to determine the stability of the system. PID algorithm is used to correct the original system to reduce the number of oscillations (N), the maximum overshoot (σ) and the adjustment time (ts) of the system, and the residual error (ess) is zero. The performance is optimal.
Key words: PID algorithm; MATLAB; Relative margin; Bode diagram
在線預(yù)覽:PID控制算法在伺服系統(tǒng)性能優(yōu)化的研究與實(shí)踐
摘自《自動(dòng)化博覽》2020年10月刊